Socket Mobile, Inc. announced the promotion of Tim Miller to Chief Operating Officer. With this promotion, Mr. Miller assumes day-to-day operating responsibility for Socket's worldwide sales and marketing, engineering and operations. Mr. Miller has been a member of Socket's executive management team since 2003, serving as its Vice President of Engineering and its Vice President of Worldwide Operations. He brings more than thirty years of operating experience and proven management skills to the position - including seven years with Com21 Inc.